Physics 1st Semester Final

In science, an educated guess about the answer to a scientific questions is called a hypothesis.

• true

• false

The SI unit for force is called the kilogram.

• True

• False

A scientific fact is something that is absolute and unchanging.

• True

• False

A hypothesis is

• an educated guess that has yet to be proven by experiment

• a synthesis of a large collection of information that includes guesses

• close agreement by competent observers of observations of the same phenomena

• a guess that has been tested over and over again and is always found to be true

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Physics is the most basic science because

• you can better understand science in general is you understand physics

• the idea of physics extend into more complex sciences

• underneath biology is chemistry and underneath chemistry is physics

• all of these

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1

The net force on an object is the combination of all the forces that act on it.

• True

• False

Tags

NGSS.MS-PS2-2

A scaler quantity has both magnitude and direction, whereas a vector quantity is described only by its direction.

• True

• False

A pair of parallel forces of 6N and 10N can have a resultant of

• 16N

• 4N

• either 16N or 4N

• none of these

The number of forces acting on a bag of sugar suspended by a weighing scale are

• one

• two

• three

• none because they cancel to zero

Tags

NGSS.MS-PS2-4

The amount of matter in an object is called it's weight.

• True

• False